P25 CAP is a partnership between the USA National Institute of Standards and Technology (NIST), the USA Department of Homeland Security (DHS) and the radio industry.
In the United States, the Department of Homeland Security recommends that P25 CAP recognised equipment is purchased by Public Safety agencies, in particular those purchased with Federal funds.
The P25 Recognition process requires the radio to be tested in a P25 certified laboratory for P25 specification compliance as determined in the TIA standard as well as demonstrated interoperability with at least 3 other radio infrastructure vendors.